Tremolite (var: Hexagonite)

Item Description

Interestingly the variety of Tremolite that was named "Hexagonite" is actually monoclinic, but the name stuck over the years. Originally this material was first reported from the Balmat-Edwards Zinc District in New York, but since "Hexagonite" is not a species, you can't really refer to this area as the type locality, since that designation is only for approved species. This particular piece is filled with prismatic, semi-translucent, pruplish colored crystals of Tremolite / "Hexagonite" free of matrix. I'm told that this particular color is due the presence of manganese, which means it's a manganoan variety of a variety of Tremolite. The piece came labeled as coming from Balmat, not Fowler.